Attachment for internal-combustion engines



- WITNESS:

March 15, 1927. 1 1,621,376

. J. E. NILES ATTACHMENT FOR INTERNAL COMBUSTION ENGINES Filed S p 22 1922 2 Sheets-Sheet 1 l NVENTOR ATTORNEY Match 15 1927.

1,621,376. J. E, NILES ATTACHMENT FOR INTERNAL COMBUSTION ENGINES Filed Sept. 22. 1922 2 Sheets-Sheet 2 I mvm'roR I v I 4% '1 wrmzss- 1 ATTORNEY Patented Mar. 15. 1927.

UNITED fjsiTAT- s I JEssnEA'nLnI aoF PONTIAC, MICHIGAN.

ATTACHMENT FOR INTERNAL-COMBUSTION nnelivns.

Application filed September 22, 1922'. Serial No. 589,960.

This invention relates to an attachment for an internal combustion enginethe general object of the invention being to provide means for introducing exhaust gases into the intake manifold for increasing the effectiveness of the explosive charge.

Another object ofthe invention is to provide means for regulating the entrance of the exhaust gases from the throttle.

A still further object of the invention is to make the device so that it canbe sub stituted for the gasket which is located be tween the manifold and the cafouretelx v This Einv'ention also consists in certain other features of construction and in the combination and arrangement of the severalparts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim. 7

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout t-he sev- .eral views, and in which Figure l is a side view of a motor showing my invention in use.

Figure 2 is an edge View with the manifolds in section.

Figures 3, 4t and 5 are detail views of the device itself.

As shown in these views I form the body 1 of the device of the general shape of the gasket which is located between the carbureter A and the inlet manifold B so that this device can be substituted for the said gasket. It is formed with a large central opening 2 which registers with thepassages in the manifold and carbureter and with the small holes 3 for receiving the bolts which hold the carbureter to the manifold. A partition 3 is formed in the hole 2 at the upper part thereof and this partition is provided with an extension 4 which extends beyond the face of the body. The upper part of this partition and extension is of trough shape. A screw threaded hole 5 is formed in the upper part of the body, its lower end being in communication with the space or chamber above the partition. adapted to receive the end of a valve 6, theother end of the valve receiving the pipe 7 which is connected with the exhaust manifold C so that when the valve is open some of the hot gases from the manifold will pass into the space or chamber above the parti- This hole is tion and will thus be mixed with the explosive charge passing into the inlet manifold. The valve is connected by the rod 8 with the throttle of the motor so that the valve will be actuated simultaneously with the opening and closing of the throttle.

From the above it will be seen that exhaust gases will be mixed with the explosive charge as the same passes into the intake manifold, thus giving more perfect combustion of the charge and in this way increasing the effectiveness of the motor. The

' exhaust gases striking the partition. will heat the same and this will act to heat the explosive charge. The partition also acts to prevent the gases from mixing with the explosive charge until they enter the intake manifold so that the charge is in the form of vapor before being mixed'with the gases. By connecting the valve with the throttle the proper amount of gases is admitted in accordance with the speed of the motor.

This invention does away'with the heating of the gasoline in the carbureter which I find is a disadvantage. In my invention the explosive-charge is in a dry state before it comes in contact with the exhaust gases; p

It will of course be understood that the supply of exhaust gases can be taken from 7 any suitable source as do not wish to be limited to the construction which .taps the exhaust of the engine.

It is thought from the foregoing description thatthe advantages and novel features" of my invention will be readily apparent.

I desire it to be'understood that I. may make changes in the construction and in the combination and arrangement of the sev eral parts, provided that such changes fall within the scope of the appended claim What I claim is Anattachment of the character described comp-rising a body adapted to be substituted for'the gasket usually'placed between a carbureter and the intake manifold of. an

internal combustion engine, saidbody hav and associating the carbureter-with the in-v take manifold, a downwardly extending forwardly projecting -trough-shaped partition" arranged in the upper portion of the central passageand havlng communlcatlon with an inlet opening in the top of the body'and extending an appropriate distance Within the adjacent end of the intake manifold, valve controlled air inlet means arranged Within the inlet opening in the top of the body and.

communicating with; the epartition and means commumcatmg an exhaust manifold With the alve controlled inlet means Whereby exhaust gases may be introduced into the intake manifold for heating the fuel mix ture from the ca-rbureter and force the same upwardly Within the intake manifold Whereby easier starting and less fuel will be attained.

In testimony whereof I aflix my signa- 

